Category: communication...

open lines of communication
making communications clear, so that an honest person could not misunderstand you and a dishonest person could not misrepresent you
eliminating meaningless chatter or complaints from your communication
observing teenagers' high level of communications amongst themselves
the exchange of meanings between individuals through a common system of symbols
Communication takes place when one mind so acts upon its environment that another mind is influenced, and in that other mind an experience occurs which is like the experience in the first mind, and is caused in part by that experience. (I.A. Richards)
the medium is the message (Marshall McLuhan)